Error: We couldn’t complete the updates, Undoing changes. Don’t turn off your computer.

No, he didn't. He clearly states his computer was installing updates and said "Do not turn your computer off", he did but not once but again by his own admission more than once. That warning is there for a reason. If your computer is going to run the way it should you have to treat it right. He has every right to be but not at Microsoft, but at himself. That is what is wrong with this country today "Not my fault it is someone else's" Hope this helps and if you need any further assistance post and we will be glad to help you.

The above opinion is mine and mine alone and doesn't necessarily reflect that of Microsoft, it's employees, or any other member of this forum.

"When we try to pick out anything by itself, we find it hitched to everything else in the Universe." - John Muir

If this answered your post Please mark it as answered.

"He" is a "she" and I did what I had to do.  It was on a loop, it was not going to correct it self.  I am not an idiot.  Perhaps had you been setting right next to me, your suggestions might have been helpful, but since you were not.....I did what I needed to and therefore, I have my computer back.  I love it when people who think they are smarter then you are, talk down to you and blame you for the worlds problems.

Every single time I've helped a person with a stuck win8 machine it's been because updates got installed when they went to shut down.

Do not blame the user here when they are merely following the prompts on the screen.

First off, I commend everyone who has attempted to help me with my problem.  All the folks on this thread are great and the sacrifice of their time and expertise is greatly appreciated.

Secondly, this is not a user issue.  I build, image, repair hundreds of computers.  I currently support 60 laptops that we downgraded (upgraded) to Windows 7.  I cannot have field people unable to work for several hours while their system goes through the "unable to install, please wait" cycle. 

Working with both MSFT and the nice folks on this thread, I have done all the steps.  Done it all repeatedly.  Nothing works.  Windows 7 is stable and works fine, and there is no "mandatory update" that won't install, and costs thousands of man hours to suffer through its failures as it rolls back (with no error code) to the original OS.

Third, this Windows 8.1 Update IS NOT my problem.  This is MSFT's problem.  I have wasted enough time on this issue.  MSFT needs to fix it.  If they won't, they will find people like me who will migrate our applications to more stable OSs (i.e., Linux).

Fourth, as a stock-holder, I find this to be intolerable.  I wait each day, hoping there will be a class-action lawsuit.  Those of you who are suffering through this... think about it.  Band together.  MSFT says we are a minority... perhaps that needs to be challenged through the legal system.  Just a thought...

I'm not exactly sure what combination of fixes I tried worked, but installation of KB2919355 finally succeeded.  I ran DISM.exe /Online /Cleanup-image /Restorehealth  and the WindowsUpdateDiagnostic several times each.  I installed other updates one at a time, followed by reboots and re-checks for updates.  One of the roadblocks was the Flash update but once that installed, it was smooth sailing for KB2919355.  Oh, and I disabled AVG throughout the process.

Coincidentally, once KB2919355 was installed the many July updates appeared and they too installed successfully.